From 39e8084e27a49a0bec825d1451f872d3e2230444 Mon Sep 17 00:00:00 2001
From: fu1996 <1586237690@qq.com>
Date: Fri, 23 Jun 2023 17:12:43 +0000
Subject: [PATCH] feat: attempting to improve performance by using caching to
 cache imported modules

---
 lib/loadLoader.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/loadLoader.js b/lib/loadLoader.js
index 1210353..71ba351 100644
--- a/lib/loadLoader.js
+++ b/lib/loadLoader.js
@@ -1,5 +1,6 @@
 var LoaderLoadingError = require("./LoaderLoadingError");
 var url;
+var moduleObj = {};
 
 module.exports = function loadLoader(loader, callback) {
 	if(loader.type === "module") {
@@ -16,7 +17,11 @@ module.exports = function loadLoader(loader, callback) {
 		}
 	} else {
 		try {
-			var module = require(loader.path);
+			var module = moduleObj[loader.path];
+			if (!module) {
+				module = require(loader.path);
+				moduleObj[loader.path] = module;
+			}
 		} catch(e) {
 			// it is possible for node to choke on a require if the FD descriptor
 			// limit has been reached. give it a chance to recover.